Purpose : This activity was to identify concepts on cells and to learn more about the functions and reproduction of cells within living organisms.
Lab Summary: While doing this activity we experimented with bacterial growth and I was able to witness growth in its replication. Through the process of mitosis, I was able to view cellular reproduction.
Lab Answers
A. Bacterial growth observation. The population doubling time is estimated to be 20 minute.
B. Cellular reproduction : The three types of cell separation are : The binary fission, Mitosis, and Miosis. Binary fusion are prokaryotes cells and mitosis and miosis eukaryotes. All of the cells reproduce. Prokaryotic cells when they are ready to divide first copy the genetic material and become 2 chromosomes. It is like cloning. Mitosis is similar to binary fission in terms of results, chromosomes are replicated, copies are moved. The opposite ends of the parent cells separate giving rise to 2 daughter cells that are similar to the parent cell. Mitosis is the type of cell division that replicates gametes. It lowers the number of chromosomes by ½. When sperm fertilizes then it has full set of chromosomes. Consider the cell cycle; compared to mitosis how much time does a cell spend in interphase? …show more content…
It was approximately 80% of time in developing cells is spent in interphase.
If 100 cells were randomly sampled estimate the percent of cells that would be involved in mitosis compared to interphase. ½ percent of the time of cells at all times are undergoing mitosis, this is because certain cells are required to reproduce more times than others.
Compare and contrast mitosis, meiosis, and binary fission and complete the table below. Cell division type Types of cells that divide in this manner # of cells produced Are the cells produced haploid (n) or diploid (2n)? Are the cells produced genetically unique or genetically identical? Purpose of this method of cell division. Mitosis Somatic 2 diploid identical reproduce Meiosis Reproductive 4 Haploid unique reproduce Binary fission Prokaryotic 2 haploid identical reproduce C. Cellular metabolism In two paragraphs please provide a detailed comparison and contrast of photosynthesis and cellular respiration. Respiration of cells and photosynthesis help each other. There reactions are the same but occur in reverse. Working together, they are living organism that give plants with carbon dioxide which goes through photosynthesis and produces glucose and these plants and bacteria give out oxygen which we all living organism need for breathing. Cellular respiration do not require sunlight only the dependent phase requires it. Cellular respiration occurs at all times. On the other hand, photosynthesis can occur only in presence of sunlight. In cellular respiration oxygen is absorbed and carbon dioxide is released, on the other hand. In photosynthesis carbon dioxide is absorbed and oxygen is released. Cellular respiration releases energy in a step wise manner ATP molecules and photosynthesis requires energy. Cellular reparation main function is to breakdown food and energy released. Photosynthesis’ main function is to produce food and capture energy. In cellular respiration glucose is broken down into water and carbon dioxide and energy as to photosynthesis, carbon dioxide and water combine in presence of sunlight to produce glucose and oxygen. Photosynthesis has 2 stages: the light dependent reaction, light independent reaction (light cycle and Calvin cycle). In cellular respiration there are 4 stages: Glycolysis,